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Macro or Close-up
Posted By: metalfab, 03-21-2008, 05:22 PM

Just playing with the DA 18-250 today and decided to try something different with it. The front of the camera lens was about 12" from the penny.

Manual Mode
Focal Length 250 mm
Exposure Time 1/125 sec
Aperture f/8
ISO Equivalent 400
100% crop (880 x 850)

Would you consider this a macro or a close-up? I'm thinking the latter since this lens is not a true macro.

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03-21-2008, 05:58 PM   #2
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I tend to think of 1:1 as true macro and ratios less than that would be close-up. Closer than 1:1 could be considered micro. I don't think the 18-250mm lens is a true macro but I must say you have certainly done a fine job on the penny picture.
03-21-2008, 06:02 PM   #3
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Nice shot. I think we have a mac-up ! But I agree with Jeff just a very well taken close up.
03-21-2008, 06:23 PM   #4

It is a great penny shot... Mac or not. How much did you crop it?

03-21-2008, 06:48 PM   #5
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Thanks all for the comments I'll try a few more interesting subjects, if I can find them .

The image (880x850) you see is a full sized crop from the original, not resized at all.

03-21-2008, 06:50 PM   #6
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usually don't people add their 2 cents worth, I think you are a penny short

Good shot by the way, and now for my 2 cents worth.

if this is a pure crop, and is 880 by 850 pixles out of a K100, then the penny looks to be about 750 pixles in diameter.

since the K100 is a 3000 x 2000 sensor in a 16 x 24 mm format (approximate) I would guess the image of the penny is about 6-7mm in diameter on the sensor.
A penny is 19mm in diameter, therefore it is 1/3 life size.

By true definition, this is not macro but close up photography, macro would have the penny more than filling the 16mm dimension of the frame./

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